Stove attachment.



M. AL MALLOY'. STOVE ATTACHMENT. APPLIGATIONPILBD' 21:13.14, 1909-.

906,248. Patented Dec. 8, 1908.

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MARY A. MALLOY, OF SPOKANE, WASHINGTON.

STOVE ATTACHMENT.

Application filed February 14, 1908.

To all whom it may concern:

Be it known that l, MARY A. MALLOY, a citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have invented new and useful Improvements in Stove Attachments, of which the following is a specification.

This invention relates -to stove attachments, the object of the invention being to provide a portable, auxiliary, miniature stove or heater applicable to any ordinary cooking stove and adapted to maintain a separate and independent rire within itself and to take care of the circulating draft, the combustion of the coal contained therein, the discharge of ashes, and the outlet of smoke to the main stove upon which such portable heater is mounted.

A further object of the invention is to provide an auxiliary heating and cooking stove which may be run economically and which will form a perfectly efficient small stove for heating irons and cooking various articles of diet the same as the ordinary large cooking stove but at greatly reduced expense.

The attachment may be used in any heating stove having a round lid or cover andis perfectly safe and convenient in use.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawing Figure 1 is a central vertical section through the attachment. Fig. 2 is a horizontal section through the same looking downward. Fig. is a side elevation ofthe fire pot and smoke The stove attachment contemplated in this invention comprises essentially an outer jacket 1 which is preferably cylindrical in shape and composed of sheet metal, the same being provided with a closed bottom 2 and being lined with asbestos as shown at 3 on the inner side thereof. rPhe bottom 2 is provided with an eccentric opening in the bottom thereof which is bounded by a depending iiange iA of suitable size to set in the opening of an ordinary cooking stove.

Within the outer casing or jacket 1 is arranged an inner shell 5 which is somewhat smaller at the top than the outer jacket as r clearly shown in Fig. 1, said inner shell contracting gradually in size from top to bot- Specication of Letters Patent.

Patented Dee. 8, 1908.

Serial No. 415,916.

tom and resting at its lower edge on the bottom 2 of the outer jacket as shown in Fig. 1. In the annular space thus left between the outer jacket 1 and the inner shell 5 there is a iilling of mineral wool as shown at 6, the said filling of mineral wool, together with the asbestos lining 3 conserving the heat and making the attachment more economical in use.

Within the opening in the bottom of the outer jacket, which opening is bounded by the flange 4C, is arranged an ash grate 7 and operating above the stationary portion of the ash grate is an oscillatory shaking grate 8 f which is pivotally connected to the stationary portion of the grate by means of a bolt or rivet 9 or the equivalent thereof. At one side of the center the movable section 8 of the grate is provided with a shaking arm 10 which extends upward within the inner shell 5 adjacent to the iront of the attachment, the upper end of said arm being provided with an extension 11 adapted to be engaged by a shaker of any suitable construction whereby the arm 10 may be moved back and forth in a draft opening 12. At the front of the attachment, the outer Ljacket 1 and the inner shell 5 are cut away or apertured in alinement with each other as shown in Fig. 1 to provide for the necessary draft. The opening 12 is adaptedto be opened and closed by means of a sliding draft door 13 which is mounted to work betweensuitable cleats or guides 14 secured to the outer jacket, the said door being perforated as shown in Fig. 1 to always admit the necessary amount of air to keep the fire burning.

l/Vithin the inner shell 5 is mounted a fire pot 15 having a general hemispherical shape and provided with graduated openings 16 in the lower part thereof so as to admit of an updraft of air through the fire pot and the coal contained therein. At its upper edge the fire pot is provided with a circumferential flange 17 which is grooved on its under side as shown in Fig, 1 adapting the same to fit over and interlock with the top edge of the inner shell 5, the fire ot being thus supported on the inner shell and out of contact with the outer jacket 1. At the rear, the

`fire pot is provided with a smoke iiue 18 which opens at its top intothe lire pot and extends through the bottom of the fire pot downward below the same and through the bottom of the outer jacket as clearly shown in Fig. 1 whereby the smoke is conducted from the fire pot downward through the flue 18 and discharged into the stove on which the attachment is mounted. The fire pot is rabbeted along the inner edge of its top to receive a ring 19 and the latter is in turn rabbeted to receive a round lid or cover 20, the parts 19 and 20 being similar to the corresponding parts of an ordinary cooking range. 5.- From the foregoing description it will be understood that all of the parts of the apparatus which influence the draft, the discharge of smoke, the combustion of coal and the discharge of ashes are included within and concealed and protected by the outer jacket which is lined with asbestos Y and packed with mineral wool to prevent the too rapid radiation and loss of heat and also to prevent the escape of heat into the house. This produces an economical auxiliary stove or heater in which a small hot fire may be maintained for a great length of time, the device being especiallyT adapted for heating flat irons and the like while also well adapted for cooking on a small scale.

Having thus described the invention, what is claimed as new, is

1. A portable attachment for stoves comprising an outer heat retaining jacket having a closed bottom, an inner shell resting on the bottom of the outer jacket, a iire pot mounted on said shell and supported on the upper edge thereof, a smoke flue communicating with the lire pot and discharging through the bottom of the attachment, and meansfor providing a draft between the inner shell and fire pot, substantially as described.

2. A portable attachment for stoves comprising an outer closed heat retaining jacket,

an inner shell resting on the bottom of said jacket, a packing of mineral wool interposed between the outer jacket and inner shell, and a iire pot mounted in said inner shell and embodying a smoke flue which opens at its uper end into the iire pot and extends at its ower end through the bottom of the attachment.

3. A portable attachment for stoves com prising an outer air tight heat retaining jacket, an inner shell resting on the bottom of said jacket, a combined fire pot and smoke flue supported on the upper edge of said shell so as to leave a draft passage between the inner shell and fire pot, said smoke flue com municating at the top with the fire pot and discharging through the bottom of the attachment and a movable ash grate in the bottom of the ash pit provided with an operating arm, substantially as described.

e. A portable attachment for stoves comprising an outer air-tight heat retaining jacket of cylindrical shape provided in the bottom thereof with an eccentrically disposed hole, a flange extending around said hole, an inner shell supported on the bottom of said jacket and contracting in size from the top to bottom and offset to one side of the `center to surround the opening in the outer jacket, and a fire pot and smoke flue included within said inner shell.

ln testimony whereof l afhX my signature in presence of two witnesses.

O. J. SWIFT, W. H. MACFARLAN. 

